<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>const 定义常量</title>
</head>
<body>
    <script>
        // 声明常量
        const SCHOOL = '尚硅谷';
        console.log(SCHOOL);

        // 1.一定要赋初始值    ==> Uncaught SyntaxError: Missing initializer in const declaration
        // const A;

        // 2.一般常量使用大写（潜规则）
        // const b = 100;

        // 3.常量的值不能修改   ==> Uncaught TypeError: Assignment to constant variable
        // SCHOOL = 'atguigu';

        // 4.块级作用域  ==> Uncaught ReferenceError: PLAYER is not defined
        // {
        //     const PLAYER = 'UZI';
        // }
        // console.log(PLAYER);

        // 5.对于数组和对象的元素修改，不算做对常量的修改，不会报错
        const TEAM = ['UZI', 'MLXG', 'Ming', 'Letme'];
        TEAM.push('Meiko')
        console.log(TEAM);
    </script>
</body>
</html>